Fix webdav -> dup
diff --git a/README.rst b/README.rst
index 7b327f5..d2d36a2 100644
--- a/README.rst
+++ b/README.rst
@@ -42,7 +42,7 @@
       client:
         enabled: true
         target:
-          engine: webdav
+          engine: dup
           url: webdavs://backup.cloud.example.com/box.example.com/
           auth:
             gss: